![]() ![]() Interface is heavily dependent on HMM infrastructure, and this patchset That can be used commonly are provided in ib_uverbs(infiniband/core). ODP has been available only in mlx5, but functions and data structures This environmentĬan be used by anybody without any special hardware but an ordinaryĬomputer with a normal NIC though it is inferior to hardware Library(librpma) being developed for this purpose. Them being merged along with ODP, an environment will be ready forĭevelopers to create and test software for RDMA with FS-DAX. OurĬontribution to rxe includes RDMA Atomic write and RDMA Flush. We have enhanced the rxe to expedite the usage of persistent memory. It enables the kernel driver to update metadata before General solution available, it is possible to work around the problem using Solve this problem, but it was rejected in the end. Go through page cache but access data directly. RDMA operations to a file and update of the file metadata are processedĬoncurrently on the same node, illegal memory accesses can be executed,ĭisregarding the updated metadata. However, there is a known issue that hinders using RDMA with FS-DAX. High-speed connections, is the best solution for the problem. Data replication with RDMA, which features That data on DAX-enabled filesystem cannot be duplicated with software RAID This is called FS-DAX(filesystem direct access) mode. Persistent memory can host a filesystem that allowsĪpplications to read/write files directly without involving page cache. We, Fujitsu, have contributed to RDMA with a view to using it with Memory without taking up so much physical memory. Result, it is possible to register a large MR that does not fit in physical Paged-in when the driver requires and paged-out when the OS reclaims. (ODP) allows applications to register MRs without pinning pages. This requires the MR to fit in physical memory and Pages in the MR so that physical addresses are never changed during RDMAĬommunication. ![]() When applications register a memory region(MR), RDMA drivers normally pin This patch series implements the On-Demand Paging feature on SoftRoCE(rxe)ĭriver, which has been available only in mlx5 driver so far. ` (8 more replies) 0 siblings, 9 replies 17+ messages in threadįrom: Daisuke Matsuda 9:22 UTC ( / raw)Ĭc: nvdimm, linux-kernel, rpearsonhpe, yangx.jy, lizhijian, y-goto, 9:22 ` IB/mlx5: Change ib_umem_odp_map_dma_single_page() to retain umem_mutex Daisuke Matsuda On-Demand Paging on SoftRoCE All of help / color / mirror / Atom feed * On-Demand Paging on SoftRoCE 9:22 Daisuke Matsuda ![]()
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